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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2016-02-10 15:59:42 +0200
committerVinod Koul <vinod.koul@intel.com>2016-02-15 22:19:32 +0530
commitee1cdcdae59563535485a5f56ee72c894ab7d7ad (patch)
treed6aa9036557e0d5432888038b4b62c7a44e04385 /drivers/nvme/host/pci.c
parent4ac31d18e4125eb2970e69069a15308cbb8e4486 (diff)
dmaengine: dw: disable BLOCK IRQs for non-cyclic xfer
The commit 2895b2cad6e7 ("dmaengine: dw: fix cyclic transfer callbacks") re-enabled BLOCK interrupts with regard to make cyclic transfers work. However, this change becomes a regression for non-cyclic transfers as interrupt counters under stress test had been grown enormously (approximately per 4-5 bytes in the UART loop back test). Taking into consideration above enable BLOCK interrupts if and only if channel is programmed to perform cyclic transfer. Fixes: 2895b2cad6e7 ("dmaengine: dw: fix cyclic transfer callbacks") Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Mans Rullgard <mans@mansr.com> Tested-by: Mans Rullgard <mans@mansr.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Cc: <stable@vger.kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/nvme/host/pci.c')
0 files changed, 0 insertions, 0 deletions